tesseract

问题 Using tesseract I have extract the text iPhone.Now want extract text along with the text position in xml. I uset GetHocrText which retrieves the text in HTML. For eg:- <span class='ocr_word' id='word_3_28' title="bbox 55 226 123 243"> <span class='ocrx_word' id='xword_3_28' title="x_wconf -5">Beverage</span> </span> Is there is any other way to extract text in XML format in tesseract OCR? Thanks in adv Srividya 回答1: The better way to do it is to use ResultIterator; you can use tesseract::RIL

问题 I'm trying to use the tesseract in visual studio 2013. I'm using "libtesseract302.lib" in the the linker -> Input (not "libtesseract302-static.lib") and everythings was OK, and it's compiled and run, but when I tried to use this code: tesseract::ResultIterator* ri; tesseract::ChoiceIterator ci(*ri); I got five link errors like this: Error 3 error LNK2028: unresolved token (0A000567) "public: __thiscall tesseract::ChoiceIterator::ChoiceIterator (class tesseract::LTRResultIterator const &)" (?

问题 Im trying to use Tess4J in Java EE (Payara server), is this possible and if so how? Exact Exception I'm getting: e = (net.sourceforge.tess4j.TesseractException) net.sourceforge.tess4j.TesseractException: java.lang.RuntimeException: Need to install JAI Image I/O package. https://java.net/projects/jai-imageio/ I have added the jai-imageio to my pom.xml , as well as added it to the modules of Payara. File pom.xml <!-- https://mvnrepository.com/artifact/net.sourceforge.tess4j/tess4j -->

问题 I have been trying to get OpenCV and the android version of tesseract (tess-two) to work with my android app. I am developing in Android Studio 1.4, the problem is that if I add the tess-two dependency alone, the app works fine and I can load the tess-two library fine. Next when I add the OpenCV dependency to the app, it breaks the support for the tess-two library and throws me this runtime error: Caused by: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "

问题 I am trying to call this cpp function from python: TESS_API BOOL TESS_CALL TessBaseAPIProcessPages(TessBaseAPI* handle, const char* filename, const char* retry_config, int timeout_millisec, TessResultRenderer* renderer) { if (handle->ProcessPages(filename, retry_config, timeout_millisec, renderer)) return TRUE; else return FALSE; } The last parameter of this function is TessResultRenderer . There is another cpp function for creating TessResultRenderer TESS_API TessResultRenderer* TESS_CALL

问题 The accepted answer to the question C++ Library for image recognition: images containing words to string recommended that you: Upsize/Downsize your input image to 300 DPI. How would I do this... I was under the impression that DPI was for monitors, not image formats. 回答1: I think the more accurate term here is resampling . You want a pixel resolution high enough to support accurate OCR. Font size (e.g. in points) is typically measured in units of length, not pixels. Since 72 points = 1 inch,

问题 So I finally managed to get the Android Tesseract Tools to compile. Everything works as expected, except I wouldn't mind some sort of progress call back. I looked in the wrapper class and the native wrapping cpp code, but there was nothing that dealt with progress. Is there an easy way to poll Tesseract for some sort of progress? I peaked at the Tesseract source code, but as a person who nativly speaks Java, it scares me. Considering how variable Tesseract is in terms of progress time, it

问题 I am trying to build tesseract for android. I have put tesseract in samples folder as C:\Android_NDK\android-ndk-r8\samples\tesseract with in tesseract folder I have tesseract-3.00 folder, leptonlib-1.66 folder and libjpeg folder. Whenever I try to build the code using ndk-build. I get error as C:/Android_NDK/android-ndk-r8/build/core/build-binary.mk:240: *** target pattern contains no '%'. Stop. I use ndk-build like this in Command Prompt C:\Android_NDK\android-ndk-r8\samples\tesseract\jni>C

问题 I'm currently developing an Android app using OCR and I've reached the point where I'm calling the BaseAPI.init() method. I keep getting errors stating that the directory must contain tessdata as a subfolder. I've checked that the file directory contains the folder with the trainingdata file inside, and made sure I'm pointing to the right directory. I would really like to fix this. The directory i'm pointing to is /mnt/sdcard/Image2Text/ . I've made sure that tessdata is a subfolder with the

问题 I'm bumping into this error that's driving me a little bit crazy with the python wrapper for tesseract which is a python module called tesseract. Here's the python code I am trying to run : img = cv2.imread(image, 0) api = tesseract.TessBaseAPI() api.Init(".","eng",tesseract.OEM_DEFAULT) api.SetPageSegMode(tesseract.PSM_AUTO) tesseract.SetCvImage(img,api) url = api.GetUTF8Text() conf=api.MeanTextConf() print('Extracted URL : ' + url) api.End() and this is what I get: Error opening data file .